Locomotive-lubricator.



1 E. McCOY. LOCOMOTIVE L'UBRI'CATOR. APPLICATION FILED APR. 24.1914.

Patented Apr. 20, 1915.

Mun- INVEIVTUR E2!) 0% /(c 5%.

- Wha W ie W Arm/ rs ED STATES PATENT OFFICE.

ELIJAH MeooY, or DETROIT, MICHIGAN, ASSIGNOR To ALEXANDER H. FUSS, or VDETROIT, MICHIGAN.

LOGOMOTIVE-LUIBRICATOR.

Specification of Letters Patent.

Patented Apr. 20, 1915.

Application filed April 24, 1914. Serial No. 834,097.

To all whom it may concern Be it known that I, ELIJAH MCCOY, a citizenof the United States of America, residing at Detroit, in the county ofWayne and State of Michigan, have invented certain new and usefulImprovements in LocomotiveLubrioators, of which the following is aspecification, reference being had therein to the accompanying drawings.

The invention relates to locomotive lubricators and it is the particularobject of the invention to provide means for the introduction ofgraphite or other suspended solid lubricant without danger of clogging.

In the drawings: Figure 1 is an elevation of my improved lubricator,showing it as applied to a locomotive; and Fig. 2 is a longitudinalsection thereof.

In the present state of the art, locomotive lubricators are usuallyprovided with a restricted passage or choke-plug, which is arrangedadjacent to the steam chest at the lower end of the oil conduit. Thischokeplug is usually a separate fitting which has a screw threadedengagement with the nipple entering the steam chest and a union couplingwith the oil conduit. This is adapted for the feeding of a free-flowingoil, but a heavy lubricant and particularly one containing a suspendedsolid matter, such as graphite, is liable to obstruct the choke-plug soas to render the device inoperative.

With my improved construction, means is provided for feeding the heavylubricant without danger of obstructing this chokeplug, this consistingessentially of a lubricant cup associated with a choke-plug, but so asnot to clog the restricted passage.

In detail, A is a casing constituting the lubricant cup and which ispreferably of such dimensions as to he insertible between the threadednipple and union of the oil conduit, in place of the usual choke-plugfitting. This casing is provided with a central passage B in which isarranged a chokeplug 0 preferably in the form of a tapering nozzlehaving a threaded portion D engaging a corresponding threaded aperturein the casing. Surrounding the passage B is a tubular wall E whichseparates said passage from an annular chamber F. This chamber receivesthe graphite lubricant which may be inserted through a plug aperture G,and the discharge of the lubricant is controlled by a needle valve Harranged at one side of the casing. There is also provided a smallpassage I through the tubular wall E near the upper end thereof, whichpermits the pulsating steam pressure within the conduit D to becommunicated to the space above the lubricant. Thus in operation eachpulsation or periodic rise in steam pressure will cause the feeding ofsome of the lubricant through the passage controlled by the valve H, andin to the central passage B, but this lubricant does not in any wayinterfere with the restricted choke passage 0.

The device constructed as described may be used to replace any standardchoke-plug fitting and will provide a means for combining with the oillubrication that of the heavier lubricant.

What I claim as my invention is 1. In a locomotive lubricator, thecombination with a choke-plug fitting, of a lubricant receptaclesurrounding the same and communicating therewith, said communicationcomprising a steam passage above the lubricant and a discharge passagefor the lubricant, the latter being out of the direct path of therestricted choke passage.

2. In a locomotive lubricator, a casing having a central passage and asurrounding annular chamber, the latter constituting the lubricantreceptacle, a choke-plug arranged with the central passage, avalve-controlled passage for the lubricant from said annular chamber tosaid central passage at one side of said choke-plug, and apressure-equalizing passage between said annular chamber and centralpassage above the level of the lubricant.

3. In a locomotive lubricator, a casing containing a central passage anda surrounding annular chamber having a pressureequalizing port at theupper end and a valvecontrolled discharge port connection at the lowerend, a choke-plug within said central passage having a depending nozzleextending below the point of entrance of said discharge passage.

4. In a locomotive lubricator, a fitting adapted for coupling betweenthe oil conduit between the lower end of said annular chamand steamchest and having a central pasber and central passage. a V10 sage and asurrounding annular chamber, a In testimonywhereofl alfix my signaturechoke-plug having a depending nozzle within presence of two Witnesses.

in said central passage, a pressure-equalizv ELIJAH MCCOY. ing portbetween said central passage and Witnesses: annular chamber at the upperend of the JAMES P. BARRY,

latter, and a valve-controlled discharge port PHYLLIS COBURN.

Copies of this patent may be obtained for five'c'eits" each, byaddressing the Commissioner of Patents.

Washington, D; C

